Shaper.



' shown, the center of the are being on the axis SILAS NOTT MALTERNER,OF CANTON, NEW YORK.

SHAPER.

Specification of Letters Patent.

Patented Dec. 4, 1.906.-

Application filed February 20, 1906. Serial No. 302,132

To all whom it may concern:

Be it known that I, SILAs NoTT MALTERNER, a citizen of the UnitedStates, and a resident of Canton, in the county of St. Lawrence andState of New York, have invented a new and Improved Shaper, of which thefollowing is a full, clear, and exact description.

This invention relates to shapers such as are used in machine-shops forfinishing small machined work.

The object of the invention is to produce a shaper of simpleconstruction which may be operated in a simple manner by hand.

The invention consists in the construction the shaper carried and Fig. 3is a perspec tive view showing the shaft of the shaper, together with agear-segment which is rigidly attached thereto and a lever for operatingthe said segment, said lever being here represented as broken away.

, 1 represents the frame of the shaper',which is formed above intoguide-shears 2 and for wardly with a table 3, adapted to receive thework. In the shears 2 a carriage 4 is carried, so that the same may bereciprocated, the forward edge of the carriage being formed into a head5, having an apron 6, carryinga tool-post 7. On its under side thecarriage 4 is provided with a longitudinally-disposed rack 8, and theteeth of this rack are adapted to mesh with a gear-seg1nent 9, which isrigidly attached to a transverseshaft 10, which shaft is mounted at asuitable point in the frame 1, as indicated. At one extremity this shaft10 carries rigidly a hand-lever 11, which affords means for rocking theshaft back and forth, as will be readily understood. On the outer faceof the frame 1, as indicated most clearly in Fig. 1, I, attach a curvedbracket 12, which is of arcuate form, as

of the shaft 10. This bracket is formed with a curved slot 13, in whichI provide adjustable stop-bolts 14. Between these stop-bolts the lever11 lies, and it should be understood that when the lever 11 isreciprocated, as

suggested above, these bolts 14 will operate to limit its angularmovement.

In operating the machine it should be understood that when the lever ismoved forwardly to a position such as that indicated in Fig. 1 in dottedlines the segment 9 will operate to advance the carriage forth intosubstantially the position in which it is indicated in dotted lines alsoin Fig. 1. With a suitable tool attached in the tool-post the lever 11may be reciprocated in this way, so as to enable the tool to operateupon a piece of work held upon the table 3.

If it should happen that the position of the work upon the table 3 issuch that the lever 11 does not reciprocate at a convenient point, whichis generally the uppermost or approximately vertical position, it isonly necessary to remove either of the stop-bolts 14 so as to enable thesegment 9 to be moved entirely out of connection with the rack 8. Thenif the carriage is desired at a more advanced position. it will be movedin that direction, whereupon the lever 11 will be moved back, so as tobring about a rengagement between the gear-segment and the rack. Whenthe lever is brought into intermediate position on each side of which itswings, the carriage will then be found to have a more advanced positionthan formerly. If the carriage is desired to reciprocate at a lessadvanced position, the operation described will be reversed.

The stop-bars 14 obviously afford means for limiting the movement of thelever and determining the stroke of the tool. Of

course when the work has been secured upon the table these bolts will beadjusted so that the tool will just clear the edges of the work whenpassingacross the same.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a shaper, in combination, a frame, a carriageslidably mounted thereupon and having a rack formed thereon, agear-segment engaging said rack, a lever rigid with said gear-segment,said frame having formed thereupon a curved slot, and adjustablestopbolts mounted in said slot and lying in the path of said lever tolimit the movement thereof.

2. In a shaper, in combination, a frame, a carriage slidably mountedthereupon, a transverse shaft mounted in said frame, a gear-segmentrigid therewith, said carriage having a rack formed thereon engagingsaid segment, a lever rigid with said shaft and dis- In testimonywhereof I have signed my posed at the side of said frame, a bracketatname to this specification in the presence of 10 cached1 ti) thgsideof said flrameglnd havingta two subscribing Witnesses.

curve s ot t erein, an ac uSta e sto 0 s mounted in said slot andadapted to be en- SILAS NO FT MALTERNER" gaged by the opposite edges ofsaid lever, i/Vitnesses:

said stop-bolts affording means for limiting J. FRED HAMMOND, themovement of said lever. W. W. I-IAILE.

